Apparatus for analyzing gases.



o, MATZERATH. APPARATUS FOR ANALYZINC GASES.

APPLICATION FILED OCT. 9 1914,

Patentedbept. 28, 1915.

the gas to be eXamined contains.

OTTO MATZERATH, OF lAACHEN, GERMANY.

APPARATUS FOR ANALYZING GASES.

T o all whom it m07/ concern Be it known that I, OTTO MATZERATH,

engineer, a subject of the King of Prussia,

residing at No. S Richardstrasse, Aachen, in

the Kingdom of Prussia, Empire of Germany, have invented certain new and useful Improvements in Apparatus for Analyzing Gases; and I do hereby declare the following to be a full, clear. andtexact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the saine.

My present invention relates to an apparatus for analyzing gases, with which the gas to be exa-mined is, by means of a hydraulic pumping arrangement, led from a measuring vessel into an absorption-vessel and the non-absorbed remainder of the gas led back from the latter again into the measuring vessel.

Apparatuses .for the analyzing of gases are already well-known in which a certain quantity of gas collected in a measuring vessel is driven on to the top-surface ot' the absorbing liquid through a constantly open connection or duct so as to allow the lion-ab- -lsorbed remainder of the gas to return easily into the measuring vessel through said duct. It is of high importance to lead back the remaining gas which has'not been absorbed, to the measuring vessel, because it is only by ascertaining in this vessel the volumes ofthe remaining quantity of gas, that one can see which percentage of absorbed' components lith s uch devices the absorption of the whole gas quantity takes place only at the top-surface of the absorbing liquid and at the wet glassparts of tlieyessel; therefore a temporally long contact of the gas with' the absorbing means is necessary in order to obtain a Jfull absorption ot' the cbsorbable components of the gas. The number of analyses which can be made with such an apparatus` is therefore restricted and the utilization of the absorbing liquid is only a. bad one. Besides, such apparatuses are not at all it for the examination of gases containing a relatively large proportion of absorbable constituent from want of a perfect absorption.

Tn order to gain a quicker succession of the. analyses, a complete, absorption of highly valuable gases as well as a better utilization ot the absorbing liquid` apparatuses have been constructed by means of which the gas is not driven against the top- Specification of Letters Patent.

Patented Sept. 28, 1915.`

Application filed October 9, 1914. Serial No. 865,934.

surface of the absorbing liquid but through the same so that the gas rises in the shape of bubbles in the said liquid. These apparatuses possess, however, the disadvantage that i the non-absorbed remainder of gas cannot.

any longer get back from the vessel oontaining the absorbing liquid into the measuring vessel through the duct connecting these two vessels. rlliis makes the control of the absorption impossible, which can only7 be eiiected by driving the remaining gas a second or a third time to the absorbing liquid. Consequently the volume of the absorbed gas cannot be read from the measuring vessel, in which the gas was collected,

because, as alreadyv mentioned, the remain-v ing (fas cannot flow back into this vessel.'

Bestes, there cannot vtake place in this apparatus a full utilization of the absorbing same gas-remainder several times through 75 means, because it` is not possible to drive the ainining the liquid with regard to its ab Y. .i

sorptive eflect.- The time for renewing the absorbing liquid cannot therefore be deter mined by examining the same and, in orderV to avoid a deficient absorptive effect during the analyses, a premature renewal of the abi soi-hing liquid will be necessary for precau-v tionary reasons. These'disadvantages which above mentioned apparatuses-(viz.j

the those in one of which the absorption takes place by leading the gas against the topl surface of the absorbing liquid and in the other by leading the gas through the liquid)-possess are avoided by my present invention. l obtain this by connecting the measuring vessel which serves for collecting the gas. by means ot' two constantly open. ducts with the absorption-vessel. One of these ducts ends below and the other above the top-surface of the absorbing liquid so that one part of the gas to be examined may be led against the surface of the liquid and the other part through this liquid, and that the remainder of the gas can be leddpack to the measuring vessel through the duct ending above the surface of the liquid.

As the greater part of thegas quantity is duct serving for the surtace-absorption, the.

chemical result can easily be read from the measuring vessel, a control ofthe absorp-` tion by repeating `the process (if-absorption.

` through a pipe 'i'. The measuring vessel a is provided with a pipe la, whichl is in communication .with the atmospheric air and which remalns open when, under the pres-A sure ofthe liquid contained in the vessel f the gas is forced out of the measuring vessel a and driven against the absorbing liquid,

while the pipe ih may be closed when sucking a quantity of gas into vessel a. The vessel f is connected with vessel a by means of a flexible tube/c whichallows the raising and lowering 'of vessel f whereby the liquidy contained therein maybe caused to penetrate more or less into theIJ measuring vessel a. ll'essel d is provided with a detachable funnel g which may also serve for the reception of liquid forced away by the gas;

The operation of the apparatus is ask folL lowsf: Fresh gases are introduced intogthe measuring vessel in any well-known nianner. 100 cbcm. of this gas are collected in this vessel, when the surface ofthe liquid contained in Vessel f has reachedthe lower end of pipe h. Pipe b penetrates so far into the vessel a that at first about 20% of the gas is driven through pipe 'b on to the topsurface of the absorbing liquid., When the liquid is caused to rise higher in vessel a byraising the vessel f, the open end of pipe b will be closedV by the liquid and the remaining part of the gas, z'. e. about 80%, will be driven through pipe 0 and consequently through the absorbing liquid contained in vessel d. The remainders of the gas coming from the combined absorbing-processunite above the absorbing liquid, asthe gas driven through this liquid rises in shape of bubbles to the top-surface of the same. This revmainder of the gas can easiiy'be sucked back into the measuring vessel through pipe b. T he result of the chemical analyses can be read from the scaled measuring vessel by ascertaining the volume of the gas remainder. For the purpose of control, the process of absorption may be repeated with one and the same gas remainder as often as de- I sired, 1t being only necessary to take care that no fresh gas enters the measuring vessel. The time for renewing the absorbing liquid results from thelcourse of the absorption processes.

v"llhe apparatus may be so constructed that an automatic working and registeringof th chemical result take place.

Having thus described my. invention what I claim and desire to secure by Letters Patent, .is z- 1'. In an apparatus for analyzing gas,

comprising a measuring vessel, an absorption-vessel and a hydraulic pumping device for forcing the gas to be analyzed from the measuring vessel into the absorption-'vessel and sucking back the non-absorbed gas-ref' Athineasuring vessel to a certain extent into the same and havingthe other end detachably fastened to-and ending at the top-wall of the absorption-vessel, and the other duct having one end attached to and ending at the top of the measuring vessel and the. other end air-tightly guided through the top-wall of the absorption-vessel and eX- tending into the same to a'point near the bottom of this vessel.

2. In an apparatus for analyzing gas, comprising a measuring vessel, an absorption-Vessel and a hydraulic pumping device for pressing the gas to be analyzed from the measuring vessel into the absorptionvessel and sucking back the. non-absorbed gas-remainder from the latter vessel into the first-mentioned one, two constantly open ducts connecting the measuring vessel, which is provided with a gas introducing pipe, with the absorption-vessel containing,

the absorbing liquid, one o fsaid ducts ending below the top-surface of the absorb-ing liquid and leading a part of the gas to be analyzed through this liquid, and the other one ending above and leading a part of the gas against the surface of` the absorbing liquid and serving to draw back the non-'absorbed gas-remainder into the measuring vessel when the pumping device iscorrespondingly operated.

In testimony whereof' I have signed my y name to this specification inthe presence of two subscribing witnesses.

OTT() MATZERA-TH.

Witnesses:

PAUL Vanns, RlcnAun S'IRoor. 

